JPS5898119A - Purification apparatus in filter apparatus - Google Patents

Abstract

PURPOSE:To attain an efficient purification effect of a filter body, by a method wherein a filter chamber and an exhaust chamber are communicated by a cylindrical member and a revolving stream is provided to a gas induced into a ring like gas passage formed by the cylindrical member. CONSTITUTION:A filter chamber 4 and an exhaust chamber 3 are partitioned by a partition wall 2 and communicated with a cylindrical member 10. A funnel like cylindrical member 17 is inserted into the opening part of the cylindrical member 10 in the side of the exhaust chamber 3 and the injection port of an injection nozzle 18 is opposedly arranged to the upper opening part of the cylindrical member 17. A ring like gas flowline 19 is formed by these cylindrical members 10, 17 and a revolvable blade 20 is fixed to the flowline 19 to impart a revolving stream to a gas induced into the cylindrical member 10 from the exhaust chamber 3. The gas introduced into the filter chamber 4 is passed through a filter body 13 to separate a substance to be filtered and the purified gas is flowed into the exhaust chamber 3 through the cylindrical members 10, 17 to be exhausted to the outside from an outflow conduit.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device in a filtration device that separates and recovers solid waste or valuable materials that are carried suspended in a gas using a filter such as a filter cloth. be.

In a filtration device, waste materials or valuable materials (referred to as filtered materials) that land on the filter body as the filtration operation progresses
Since the gas permeability of the filter body deteriorates due to the accumulation of substances, a means for cleaning the filter body by removing the adhered substances to be filtered is provided.

As this cleaning means, for example, a so-called backwashing method has been proposed in which pressure gas is supplied to the filter body at appropriate times to reverse the normal gas flow fE force direction and time.As a cleaning device using this backwashing method, , a cylindrical member is placed at the open end of the filter body,
At the opening 1-1 of the cylindrical member, an injection nozzle is arranged coaxially with the axis of the cylindrical member, which passes through the pressure gas supply source and injects the pressure gas in the opposite direction to the normal flow. What we have achieved is yet to be put into practical use.

SUMMARY OF THE INVENTION The object of the present invention is to improve the above-mentioned backwashing method and provide a cleaning device that can achieve even more efficient cleaning action.

In order to achieve such an object, the present invention communicates a separated filtration chamber and an exhaust chamber through a partition wall with a cylindrical member, and a filtration chamber is provided in the cylindrical member opened into the filtration chamber. In the filtration device, the cylindrical member is coaxial with the injection nozzle, and the filtration device is configured such that the cylindrical member is coaxial with the injection nozzle and the alignment device is arranged in multiple stages. Each cylindrical member forms an annular gas flow path, and the gas flow path is provided with a swirling flow of gas drawn from the exhaust chamber into the cylindrical member as pressurized gas is injected. It is characterized in that it is equipped with a swirling flow forming means that imparts a swirling flow.

Next, one embodiment of the present invention will be described in detail based on the drawings.

In the figure, the inside of an airtight housing 1 is divided into an upper exhaust chamber 3 and a lower filtration chamber 4 through a partition wall 2. A hopper 5 for collecting materials is formed, and a discharge device 6 for rotary pulp or the like is provided at the lower end of the hopper 5. The hopper 5 is connected to a canal and an inlet pipe 7 for gas containing substances to be filtered, and the exhaust chamber 3 is connected to a leakage gas and body oil outlet pipe 8 to remove the outflow. The conduit 8 is connected to an exhaust fan (not shown). Ji is thin and fl.

As shown in FIG. The communication hole 12 in the member 10 allows the exhaust chamber 3 and the filtration chamber 4 to communicate with each other. The cylindrical member 10 in the filtration chamber 4
On the outer periphery of the lower part of the filter body 13 made of a filter cloth such as a felt
is fastened by means 14, and its lower sealed end is connected to the removable socket via tensioning means 15 (see Figure 1), and the filtration The body 13 is held in a cylindrical shape by holding links 16 arranged at appropriate intervals on its outer periphery.

The lower end of the material 17 is inserted into the frame in a telescoping manner, and furthermore, an injection port of a sentry nozzle /l/+8 is arranged opposite to the upper opening of the cylinder-shaped member 17. shaped members 10 and 1
7 are aligned and arranged in multiple stages coaxially with the axis of the injection nozzle relay 18. And, Towara cylindrical member 1
0 and 17 form an annular gas flow passage 19, and a swirling flow is formed in the gas flow passage 19 by the flange portion 11 of the cylindrical member 10 and the peripheral wall portion of the cylindrical member 17. A swirling vane 20 as a forming means is fixed,
The swirling vanes 20 provide a swirling flow to the gas drawn into the cylindrical member 10 from the exhaust chamber 3 as the pressure gas is injected from the injection nozzle /L/+8. .

On the other hand, as shown in FIG. 1, the injection nozzle v18 is connected to a pressure gas introduction pipe 21, and the pressure gas introduction pipe 21 is connected to a pressure gas storage container 23 via an opening/closing control valve 22. , the storage container 23 communicates with a pressure gas introduction pipe (not shown). Note that the storage container 5-23 may not be provided, and the pressure gas introduction pipe 21 may be directly connected to the pressure gas supply source.

Next, to explain the operation of this device, the gas containing the substance to be filtered flows from the inflow pipe 7 through the hopper 5 to the filtration chamber 4.
When the gas passes through the filter body 13, the substance to be filtered is separated by filtration, and the purified gas flows into the exhaust chamber through the cylindrical member 10.17 and then flows out. conduit 8
is discharged to the outside.

On the other hand, every predetermined period of time during which the filtered matter is deposited on the outer surface of the - weekly leave 13, the on-off control valve 22 is operated to supply a predetermined pressure gas for a minute period, and the injection nozzle/I/18
The liquid is then injected into the cylindrical members 17 and 10. With this injection of pressurized gas, gas is drawn into the cylindrical member 17 from the exhaust chamber 3, and gas is also drawn into the cylindrical member 10 from the gas flow passage 19 formed between the cylindrical members 17 and 10. In this case, the induced gas becomes a swirling flow due to the swirl vanes 20 K provided in the gas flow passage 19 and is induced into the entire amount of gas in the exhaust chamber 3, thus reversing the normal gas flow and causing this reversal. The airflow acts from the inside of the filter body 13, causing the filtered noise≠II# to accumulate on the outside 61.

In this way, according to the embodiment described above, the induced flow is induced from the exhaust chamber 3 into the cylindrical member 17 by the jet flow from the injection nozzle 18, and the induced flow is induced into the cylindrical member 10 from the gas flow path 19. The induced swirling flow additionally acts, and a large amount of backflow air can be fully effectively introduced by feeding a relatively small amount of pressurized gas, and the entire flow line cleaning action of the filter body 13 can be achieved. It has become.

Next, other embodiments shown in FIGS. 14 to 3 will be explained.
For clarity, the same parts as in the first embodiment shown in FIGS. 14 to 3 are designated by the same reference numerals, and only the differences will be explained.

In the second embodiment shown in FIGS. 4 and 5, the injection nozzle 18 is composed of a tube body 24 and an injection body 25, and the tip of the tube body 24 has a part of the width of the injection body 25. It is inserted concentrically into the part. A torsion vane 27 is identified in the annular gas inflow path 26 formed between the outer peripheral wall of the tube body 24 and the inner peripheral wall of the jet body 25, and the torsion vane 27 allows pressure gas to flow Along with the injection, the entire gas is effectively separated from the exhaust chamber 3 into the injection body 25. ν”, the tip injection port Fi of the injection body 25
A torsion vane 28 similar to the fattening vane 27 (1) is fixed between the outer peripheral wall of the distal end of the injector 25 and the inner peripheral wall of the cylindrical member 17, and is installed in the upper opening of the cylindrical member 17. This enhances the effect of attracting gas from chamber 3 into the chamber 17.

In addition, in the third example shown in Figures 1 and 7 -
A casing 29 integrated with the cylindrical member 17 is fixed to the upper part of the single-shaped member 10, and the casing 29 is integrated with the cylindrical member 17.
9 has a cyclone structure in which an inlet 30 for the attracting gas is opened in the tangential direction of the circumferential wall of the cylindrical member 17, so that a swirling flow is imparted to the attracting gas.

The fourth embodiment shown in FIG. 8 is a modification of the third embodiment, except that the cylindrical member 10 cannot be inserted into the filter body 13. They are different.

In addition, in the two pieces, the case where they are arranged in alignment with the drum-shaped cylindrical member 10 and the cylindrical part 1J17 of the cylindrical part is shown, but these may be arranged in multiple stages of three or more stages. Furthermore, other than the drum-shaped and H-double shapes may be used as desired, and it will be obvious to those skilled in the art that various other embodiments are possible within the scope of the present invention. .

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a main part showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view of a main part showing the first embodiment, and Fig. 3 is a cross-sectional view taken along the line ■-■ of Fig. 2. , FIG. 4 is an enlarged cross-sectional view of the main parts showing the entire second embodiment, FIG. 5 is a V-vrN plane view of I, and FIG. 6 is an enlarged cross-sectional view of the main parts showing the third embodiment. , FIG. 7 is a cross-sectional view taken along the line ■--■ in FIG. 6, and FIG. 8 is an enlarged cross-sectional view of a main part showing the fourth embodiment. 2... Partition wall 3... Exhaust chamber 4... Filtration chamber 10... Cylindrical member 13... Filter body
17... Cylindrical member 18... Injection nozzle #19.
...Gas flow passage 20... Articulating vane patent applicant Tsukuhisa Co., Ltd. 9- Figure 6 λ Figure 101-

Claims (3)

[Claims] (1) The filtration chamber and the exhaust chamber, which are divided through a partition wall, are communicated with each other through a cylindrical member, and a filter body is connected to the cylindrical member that opens into the filtration chamber, and the communication hole of the cylindrical member is connected to the cylindrical member. In a filtration device in which pressurized gas is injected from an injection nozzle against the air, the cylindrical member is coaxially aligned with the injection nozzle in multiple stages, and each cylindrical member forms an annular gas flow path. In addition, the gas flow path is provided with a swirling flow forming means for imparting a swirling flow to the gas drawn from the exhaust chamber into the cylindrical member as the pressurized gas is injected. Cleaning equipment featuring @. (2) The cleaning device according to claim 1, wherein the swirling flow forming means comprises a swirling vane fixed to the cylindrical member. (3) The scope of claim 1 is characterized in that the swirling flow forming means is composed of a casing in which a flow port for the induced air is opened in the tangential direction of the circumferential wall of the cylindrical member. #Device.